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A substance that gains oxygen during a reaction is said to be:
AOssified
BOptimised
COrganised
DOxidised
Answer & Solution
Correct answer: D. Oxidised
1. Copper heated in air gains oxygen.
2. It becomes copper oxide.
3. It is said to be oxidised.
_Source: NCERT Class 10 Science, Ch 1 'Chemical Reactions and Equations'_
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